Transcript for How Hillary Clinton's Email Controversy Will Affect Her Campaign

Let's talk about it more with Jon Karl and, Jon, this is a tough report from the inspector general calls many of secretary Clinton's explanations into question and as Cecilia points out the FBI investigation still looming. Reporter: Yeah, and this has had an effect on her campaign. This story first broke 452 days ago and yet we're still learning more about her e-mail practices and, George, it is the primary reason why you see in some polls 60% and more say they find Hillary Clinton not honest and trust worthy but the big question is the one raised by Cecilia at the end which is what happens with the FBI investigation. Clinton officials say that they are waiting by the phone expecting her to be called in for questioning in that investigation and hope it happens soon so they can finally put this to bed. Meanwhile, Jon, at his press conference talking about Donald Trump again saying world leaders he's talked to are surprised by the rise of Donald Trump and not sure how seriously to take him. Let's look. They're rattled by him. And for good reason. Because a lot of the proposals that he's made display either ignorance of world affairs or a cavalier attitude or an interest in getting tweets and headlines. Pretty clear, Jon, the president won't hold back at all on taking on trump. Reporter: When he's firing a missile like that from Japan, you know that he is eager to get out there on the campaign trail. His legacy is on the line this fall. The president is waiting to get out on the campaign trail and is eager to do it.

This transcript has been automatically generated and may not be 100% accurate.